I think the correct answer from the choices listed above is option A. A potential negative consequence of using genetically engineered medicine would be that g<span>ene markers that are resistant to antibiotics are used, providing the possibility for humans to have increased antibiotic resistance. Hope this answers the question. Have a nice day.</span>
DNA structure. DNA is made up of molecules called nucleotides. Each nucleotide contains a phosphate group, a sugar group and a nitrogen base. The four types of nitrogen bases are adenine (A), thymine (T), guanine (G) and cytosine (C).
Answer:
Organisms of all classes are matched as follows-
Explanation:
Insects- Insects are a group in phylum arthropoda. They are having 6 legs and their body is devided into 3 parts- head thorax and abdomen.
Mollusca- Second largest phylum of invertebrates. These are mostly marine some live on land also. They have soft body with hard calcium carbonate shell known as mantle.
Bryophyta- These are nonvascular plants. They dont have vascular system.They don't produce flowers or pollen. They reproduce by spores. Example- mosses
Aves- This is class of birds. Their charactersticks are beaks, toothless jaws,feathers and laying eggs.
Mammalia- These are vertebrates animals class. They give birth to their young ones, female are having well developed mammary glands to produce milk for young ones.
Arachnida- This is a class of invertebrates. It includes scorpion, spider. They are 8 legged creatures. Body has two parts.
Populations of predators increase when populations of prey are high because there is less competition for food. The reason many animals start breeding in the Spring season in the Americas is because there is an abundance of insects from plant influx, which follows by those that eat the insects, then are consumed by those on top of the food chain. Also, since there is an abundance of food, it becomes a prime time for breeding, resulting in more predators as a whole.